Delayed Light Activation Improves Color Stability of Dual‐Cured Resin Cements

Furuse, Adilson Yoshio; Santana, Lino Oliveira Carvalho de; Rizzante, Fábio Antônio Piola; Ishikiriama, Sérgio Kiyoshi; Bombonatti, Juliana Fraga Soares; Correr, Gisele Maria; Gonzaga, Carla Castiglia

doi:10.1111/jopr.12509

Cited by 31 publications

(36 citation statements)

References 29 publications

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“…This may be due to less residual monomer content of the translucent samples which were caused by higher polymerization of the resin by allowing more light transition. Light exposure increases the conversion and increased conversion causes higher color stability (6,17). Color change of dual cured resin based cements is associated with the oxidization of unreacted amine co-initiator from the redox polymerization system and unreacted benzoyl peroxide (7,20).…”

Section: Discussionmentioning

confidence: 99%

“…Resin based cements are recommended for cementation of all ceramic restorations (6). Resin cements provide higher esthetic appearance and also strengthen the ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

“…A visible color change in esthetic zone may not be tolerated by the patient. Thus several studies were employed to identify the color stability of resin cements under varying conditions (6). Color change of resin composites is both associated with intrinsic factors related with resin's itself and extrinsic factors which can occur during clinical use (1,(9)(10)(11).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Color Selection on the Color Stability of the Resin Cement

Tanış¹,

Akay²

2017

meandros

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Bulgular: En düşük ΔE değeri grup 1'de gözlendi. Grup 2'de, grup 3'e kıyasla daha yüksek ΔE değeri elde edilse de her iki grup arasında istatistiksel olarak anlamlı fark bulunamadı.Sonuç: Yarı saydam baz ve yarı saydam katalizör karışımı sonucunda klinik olarak kabul edilebilir bir renk değişimi gözlenirken, B1 baz, A3 katalizör ve A1 baz, A3 katalizör karışımları ise klinik olarak kabul edilebilir değerlerin üzerinde renk değişimi göstermiştir. Rezin simanın rengi simanın renk stabilitesi üzerinde kısmen etkili olmuştur. Objective:The aim of this study was to determine effect of shade selection on resin cement's color stability. MaterialsandMethods:Ten resin cement samples in dimensions of 10 mm diameter and 2 mm thickness for each group [group 1: Translucent base and translucent catalyst, group 2: Bleach XL (B1) base and yellow (A3) catalyst, group 3: White (A1) base and A3 catalyst] totally 30 samples were prepared. Color coordinates of each sample were recorded after polymerization and 5000 thermal cycles. Color variation (ΔE) was calculated for each sample and statistical analyses were performed. Results:The lowest ΔE values were obtained for group 1. Group 2 showed higher ΔE values than group 3 however there were no statistical difference. Conclusion:Translucent base and translucent catalyst mixture showed clinically acceptable color stability while B1 base and A3 catalyst and A1 base and A3 catalyst mixtures did not show clinically acceptable color stability. Shade of the resin cement partially effected its color stability.Ad dressforCor res pon den ce/Ya zış maAd re si:

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Section: Discussionmentioning

confidence: 99%

“…Resin based cements are recommended for cementation of all ceramic restorations (6). Resin cements provide higher esthetic appearance and also strengthen the ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Color Selection on the Color Stability of the Resin Cement

Tanış¹,

Akay²

2017

meandros

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“…Light-activation delay of 5 min, was suggested as being advantageous to reduce shrinkage stress during polymerization, without impairing the degree of conversion, the extent of polymerization and hardness of some dual-cured cements [9][10][11] . It was also demonstrated that a 6-minute delay after the manipulation of resin cements may result in increased color stability 2 , but a 10-minute delay may be harmful 12 . During polymerization, individual polymer chains are formed by covalent bonds, which are crosslinked by secondary bonds.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, different light-activation protocols should be investigated, as the most significant effects on the properties of resin cements are related to the type of cement, exposure time, followed by translucency, ceramic type and thickness of the ceramic restoration [1][2][3] . The effect of light activation on dual-cured resin cements should not be neglected for some cements [4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Influence of curing protocols on water sorption and solubility of a self-adhesive resin-cement

et al. 2017

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Aim: To evaluate the effect of different activation protocols on the polymerization of a self-adhesive dual cured resin-based cement. Methods: Thirty disc-shaped specimens were prepared with the resin cement RelyX U200 (3M ESPE) and divided according to three protocols: immediate light-activation for 40 s, delayed light-activation (10 min after manipulation, for 40 s) or self-curing without lightactivation. The specimens were desiccated, kept in water at 37 °C for 7 days and desiccated again to calculate water sorption, solubility and mass variation. Data were analyzed by Shapiro-Wilk Test and Wilcoxon tests (α=0.05). Images after the specimens' final desiccation were also made. Results: The Wilcoxon test revealed a significant difference for sorption and mass variation (p<0.05) and the highest value was observed in self-curing or chemical activation group (CA), followed by delayed light-activation (DL) and immediate light-activation (IL). Besides the water sorption parameters, there were also microvoids on the discs from the delayed and no light-activation groups. Conclusions: The light-activation immediately after manipulation is recommended for the evaluated resin cement.

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